CN202421408U - Current transformer polarity test device - Google Patents
Current transformer polarity test device Download PDFInfo
- Publication number
- CN202421408U CN202421408U CN2011205152002U CN201120515200U CN202421408U CN 202421408 U CN202421408 U CN 202421408U CN 2011205152002 U CN2011205152002 U CN 2011205152002U CN 201120515200 U CN201120515200 U CN 201120515200U CN 202421408 U CN202421408 U CN 202421408U
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- China
- Prior art keywords
- current transformer
- test
- test device
- binding post
- polarity
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- Expired - Lifetime
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Abstract
The utility model discloses a current transformer polarity test device and aims to provide a test instrument capable of being carried conveniently and quickly and effectively judging the polarity of a current transformer so as to reduce the test time, increase the maintenance efficiency and reduce the service stopping time of the device. The current transformer polarity test device comprises a shell for accommodating a test circuit; and the surface of the shell is provided with a first terminal set, a second terminal set and a double-head micro-ammeter for displaying the polarity of the current transformer. The test instrument mainly utilizes the principle of dotted terminals of the current transformer to work; meanwhile, a power module of the test instrument supplies power through a built-in dry cell or a lithium cell, so that no external power supply is needed in the test work.
Description
Technical field
The utility model relates to a kind of testing tool of power equipment, especially the current transformer polarity test device.
Background technology
Current transformer is the important component part of electric system, and it is applied in aspects such as relay protection, electric energy metrical, distant place observing and controlling, system failure filtering widely.Along with the develop rapidly of electronic technology, emerge in an endless stream to the testing equipment of current transformer, the most frequently used current transformer characteristic test instrument is widely used in testing crew at present.Have that pilot project is complete, the simple advantage of wiring, but owing to be the attribute testing appearance, the more complete relatively instrument that brings of function is too heavy; Common characteristics tester weight is all about 25 kilograms; Add the needs that will satisfy volt/big stream power supply of peace characteristic, power cable is thick, test connection, the extremely inconvenience of taking out stitches; Bring very big inconvenience for on-the-spot testing crew, reduce overhaul efficiency.
Summary of the invention
The purpose of the utility model is to overcome deficiency of the prior art, and a kind of portable current transformer testing tool is provided, and can fast, effectively determine current transformer polarity, reduces test period, improves overhaul efficiency, and minimizing equipment stops the labour time.
In order to solve the problems of the technologies described above; The utility model is realized through following technical scheme: a kind of testing tool of power equipment; Comprise the housing that holds test circuit, said outside also is provided with the first binding post group, the second binding post group, is used to show the double end microampere meter of current transformer polarity.
Further, the said first binding post group is made up of a binding post and No. two binding posts, is used to test winding of mutual inductor.
Further, the said second binding post group is made up of No. three binding posts and No. four binding posts, is used to test the mutual inductor Secondary Winding.
Further, also be provided with on the said housing and pull off switch, prevent that momentary current from crossing ambassador's test circuit and being damaged.
Further, also be provided with self-testing circuit binding post group on the said housing, whether normally be used for the testing tool internal circuit or test wiring.
Further, also be provided with the detection lamp on the said self-testing circuit binding post group, be used to show whether internal circuit or test wiring be normal.
Further, said housing both sides also are provided with handle, make things convenient for the mobile test instrument.
Further, said housing is arranged on and carries in the case, and instrument carries when conveniently going out to test.
Further, said carrying also is provided with article putting groove on the case, is used for placing the test wiring.
The beneficial effect of the utility model is: in light weight being easy to carry, and can fast, effectively determine current transformer polarity, and reduce test period, improve overhaul efficiency, minimizing equipment stops the labour time.
Description of drawings
Fig. 1 is the structural representation of the utility model current transformer polarity test device;
Fig. 2 is the test circuit figure of the utility model current transformer polarity test device.
Embodiment
Below in conjunction with accompanying drawing and embodiment the utility model is further described:
In Fig. 1, a kind of testing tool of power equipment comprises the housing 1 that holds test circuit, and establish said housing 1 outside also has the first binding post group 2, the second binding post group 5, is used to show the double end microampere meter 8 of current transformer polarity.The said first binding post group 2 is made up of a binding post 3 and No. two binding posts 4, is used to test winding of mutual inductor.The said second binding post group 5 is made up of No. three binding posts 6 and No. four binding posts 7, is used to test the mutual inductor Secondary Winding.Also be provided with on the said housing and pull off switch 9, prevent that momentary current from crossing ambassador's test circuit and being damaged.Also be provided with self-testing circuit binding post group 10 on the said housing 1, whether normally be used for the testing tool internal circuit or test wiring.Also be provided with on the said self-testing circuit binding post group 10 and detect lamp 11, be used to show whether internal circuit or test wiring be normal.Said housing 1 both sides also are provided with handle 12, make things convenient for the mobile test instrument.Said housing 1 is arranged on and carries in the case 13, and instrument carries when conveniently going out to test.Said carrying also is provided with article putting groove 14 on the case 13, be used for placing the test wiring.
In Fig. 2; This testing tool mainly is to utilize current transformer end principle of the same name to carry out work, and at a winding P1, the P2 winding difference positive and negative electrode DC voltage of current transformer, this moment, direction of current was that P1 flows to; P2 flows out, and this electric current produces electromotive force in Secondary Winding.At this moment secondary is made as K2 and flows into, and K1 flows out, and the induction electromotive force that Secondary Winding be described is K1 for just, and K2 is for bearing.Like this, P1 and K1 all on induction electromotive force for just, promptly P1 and K1 are end of the same name.
When current transformer is carried out polarity test, two binding posts in the self-testing circuit wiring group 10 are coupled together earlier, light then explain that internal circuit and test wiring normally can carry out test job if detect lamp 11 with the test wiring.Test oneself finish after; To test wiring takes off from self-testing circuit wiring group 10; P1 winding in winding of a binding post 3 and current transformer in the said first binding post group 2 is linked to each other; No. two binding posts 4 are linked to each other with the P2 winding, No. three binding posts 6 in the second binding post group 5 are linked to each other with K1 winding in the secondary winding in current transformer, No. four binding posts 7 are linked to each other with the K2 winding.Press then and pull off 9 pairs on switch current transformer is carried out polarity test.If pointer turns left on the double end microampere meter 8, then institute's measuring current mutual inductor polarity is for just, if pointer turns right on the double end microampere meter 8, then institute's measuring current mutual inductor polarity is for negative.
The utility model power module adopts built-in dry cell or lithium battery power supply, so do not need external power supply when carrying out test job.
Claims (9)
1. the current transformer polarity test device comprises the housing (1) that holds test circuit, it is characterized in that: said housing (1) outside also is provided with the first binding post group (2), the second binding post group (5), double end microampere meter (8).
2. current transformer polarity test device according to claim 1 is characterized in that: the said first binding post group (2) is made up of a binding post (3) and No. two binding posts (4).
3. current transformer polarity test device according to claim 1 is characterized in that: the said second binding post group (5) is made up of No. three binding posts (6) and No. four binding posts (7).
4. current transformer polarity test device according to claim 1 is characterized in that: also be provided with on the said housing (1) and pull off switch (9).
5. current transformer polarity test device according to claim 1 is characterized in that: also be provided with self-testing circuit binding post group (10) on the said housing (1).
6. current transformer polarity test device according to claim 5 is characterized in that: also be provided with on the said self-testing circuit binding post group (10) and detect lamp (11).
7. current transformer polarity test device according to claim 1 is characterized in that: said housing (1) both sides also are provided with handle (12).
8. current transformer polarity test device according to claim 1 is characterized in that: said housing (1) is arranged on and carries in the case (13).
9. current transformer polarity test device according to claim 8 is characterized in that: said carrying also is provided with article putting groove (14) on the case (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205152002U CN202421408U (en) | 2011-12-12 | 2011-12-12 | Current transformer polarity test device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205152002U CN202421408U (en) | 2011-12-12 | 2011-12-12 | Current transformer polarity test device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202421408U true CN202421408U (en) | 2012-09-05 |
Family
ID=46746160
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205152002U Expired - Lifetime CN202421408U (en) | 2011-12-12 | 2011-12-12 | Current transformer polarity test device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202421408U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459451A (en) * | 2014-11-26 | 2015-03-25 | 国网河南省电力公司鹤壁供电公司 | Transformer current mutual inductor polarity tester and testing method |
| CN105842579A (en) * | 2016-05-31 | 2016-08-10 | 国网青海省电力公司西宁供电公司 | Portable current transformer polarity tester |
| CN109683056A (en) * | 2019-03-06 | 2019-04-26 | 国网山东省电力公司沂源县供电公司 | A kind of portable multi-function polarity measurement device and its application method |
-
2011
- 2011-12-12 CN CN2011205152002U patent/CN202421408U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104459451A (en) * | 2014-11-26 | 2015-03-25 | 国网河南省电力公司鹤壁供电公司 | Transformer current mutual inductor polarity tester and testing method |
| CN104459451B (en) * | 2014-11-26 | 2017-05-10 | 国网河南省电力公司鹤壁供电公司 | Transformer current mutual inductor polarity tester and testing method |
| CN105842579A (en) * | 2016-05-31 | 2016-08-10 | 国网青海省电力公司西宁供电公司 | Portable current transformer polarity tester |
| CN109683056A (en) * | 2019-03-06 | 2019-04-26 | 国网山东省电力公司沂源县供电公司 | A kind of portable multi-function polarity measurement device and its application method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120905 |
|
| CX01 | Expiry of patent term |